I'm usually not that blunt, but this has been tried before and it went to shit:
https://bitcointalksearch.org/topic/m.861305Basically you are betting that you will be offsetting your initial cost of installing the plant against electricity cost of your mining competitors. Thing is, the major farms are getting such low electricity as they buy in bulk, they are way ahead of you.
Basic example:
You: 100'000 for a smallish plant, completed in x weeks, months.
Your competition: With 100'000 they can get electricity for 230kW for about a year at 5 cents.
Your competition is mining _now_ whilst you need to build that plant.
Please crunch your numbers before attempting this. Include network difficulty and exchange rate numbers too.
Also, internet speed is not that important for mining. The stratum protocol uses little bandwidth. Depending on distance and topography you also could use a wifi antenna to reach several kilometers.
Hmmm... at those 5cent rates the breakeven for electricity alone would be around 5 years with micro hydro . The problem I see with Diablo mining company is they went solar which far slower of a payback than micro-hydro and more maintenance. The problem is micro hydro is that you either need a piece of land with a small river or spring and a 300 meter + drop in elevation (High velocity , low volume) or a 3-6 meter drop and large amounts of continuous water (Low velocity /high volume) so this limits the available locations.
The thread indicates-" Between 158% and 183% of the original investment has been repaid." so i don't think it was a total failure of a project even with the big mistake of using solar.
There could be other motivations for this project -
1) Wanting to increase mining decentralization
2) Wanting to give opportunity for an average user to have a fairer distribution in earnings as a partner vs cloud mining
3) Wanting to provide green mining solutions to encourage others to follow suit and set a standard for bitcoin for years to come
This being said, if anyone wanted to put together this project you may as well try to at least accomplish these aspects:
1) Have a suitable location already where land wouldn't need to be purchased to lower costs until it is scaled up.
2) Design a system that reused the waste heat from all the asic miners in a productive means. I.E. heating water for homes, heating a warehouse, ect...
3) Absolutely do the math and determine the best return(which means solar is probably out unless you build a multi-million dollar solar tower)
4) If the land is single purpose use make sure it is being utilized for something else as well